Craig Mayer, Nick WIlliams, Vojtech Huser
Lister Hill National Center for Biomedical Communications, National Library of Medicine, NIH, Bethesda, MD

See the full regCTG repository at https://github.com/lhncbc/CRI/tree/master/regCTG

To return to the list of conditions and view other reports go to https://lhncbc.github.io/CRI/regCTG/regCTG-condition_report_links.html


Study Counts

Type Study_count
Total_Studies 2343
interventional 1822
Observational 490
Registry 31

Studies over Time

```

Interventional Trials

Intervention Type

intervention_type Study_Count
Drug 572
Drug|placebo 525
Behavioral 199
Other 149
Device 73
Biological|placebo 49
Biological 39
Procedure 34
Dietary Supplement 22
Dietary Supplement|placebo 20
Device|Drug 18
Behavioral|Other 14
Drug|Other 12
Device|Other 10
Diagnostic Test 9
Device|placebo 7
Drug|Procedure 7
Other|placebo 5
Behavioral|Device 4
Combination Product 4
Dietary Supplement|Drug 4
Behavioral|Drug 3
Biological|Drug 3
Dietary Supplement|Other 3
Drug|Other|placebo 3
Other|Procedure 3
Behavioral|placebo 2
Biological|Drug|placebo 2
Biological|Other 2
Biological|Procedure 2
Diagnostic Test|Other 2
Drug|placebo|Radiation 2
placebo 2
Behavioral|Device|Other 1
Behavioral|Drug|Other 1
Biological|Device|Other|Procedure 1
Biological|Dietary Supplement 1
Biological|Drug|Radiation 1
Biological|Other|placebo 1
Combination Product|placebo 1
Device|Drug|Other 1
Device|Other|placebo 1
Device|Other|Procedure 1
Device|Procedure 1
Dietary Supplement|Other|placebo 1
Drug|placebo|Procedure 1
Drug|Radiation 1
Genetic 1
Genetic|Other 1
Radiation 1

Count of Studies by Intervention (normalized and mapped)

Interventions over Time

Weekly studies for each intervention

Studies by Country

Country Study_Count
United States 601
NA 221
United Kingdom 124
Canada 84
Germany 48
Brazil 33
Denmark 32
France 31
Japan 29
China 27
Netherlands 20
Spain 18
Sweden 18
Belgium 17
Italy 17
Poland 15
United States|Canada 14
Australia 13
Korea, Republic of 13
Turkey 12
New Zealand 8
Thailand 8
Finland 7
Germany|United Kingdom 7
India 5
Switzerland 5
Taiwan 5
United States|Puerto Rico 5
Egypt 4
Hong Kong 4
Israel 4
United States|United Kingdom 4
Belgium|Germany 3
China|Korea, Republic of|Philippines 3
Ireland 3
Netherlands|United Kingdom 3
Norway 3
Pakistan 3
Poland|Ukraine 3
United States|Australia 3
Argentina 2
Australia|New Zealand 2
Austria 2
Bangladesh 2
Canada|Sweden 2
France|Germany 2
Germany|Netherlands|United Kingdom 2
Greece 2
Lithuania 2
Puerto Rico 2
Qatar 2
Russian Federation 2
Sweden|United Kingdom 2
Tunisia 2
United States|Argentina|Australia|Canada|Chile|France|Germany|Korea, Republic of|Poland|Romania|Russian Federation|Ukraine|United Kingdom 2
United States|Argentina|Brazil|Canada|Philippines 2
United States|Costa Rica|Guatemala|Hungary|Mexico|Poland|Russian Federation 2
Argentina|Australia|Brazil|Canada|China|France|Germany|India|Indonesia|Malaysia|Mexico|Philippines|Singapore|South Africa|Spain|Thailand|Vietnam 1
Argentina|Australia|Colombia|France|Korea, Republic of|Spain|United Kingdom 1
Argentina|Austria|Croatia|Estonia|Guatemala|Hungary|India|Italy|Korea, Republic of|Latvia|Poland|Slovakia 1
Argentina|Belarus|Bulgaria|Czechia|Germany|Hungary|Italy|Lithuania|Poland|Portugal|Romania|Russian Federation|Slovakia|Spain|Turkey|Ukraine|United Kingdom 1
Argentina|Belgium|Brazil|United States|Canada|Colombia|Denmark|France|Germany|Italy|Mexico|Poland|Russian Federation|Spain|Sweden|Taiwan|United Kingdom 1
Argentina|Brazil|China|Costa Rica|Hungary|India|Japan|Korea, Republic of|Malaysia|Peru|Philippines|Thailand 1
Argentina|Brazil|Costa Rica|Poland 1
Argentina|Brazil|Germany|Israel|Russian Federation 1
Argentina|Chile|Colombia|Czechia|Germany|Greece|Hungary|India|Israel|Mexico|Peru|Poland|Russian Federation|Serbia|Singapore|Slovakia|South Africa|Spain|Taiwan|Turkey|Vietnam 1
Argentina|Colombia|Costa Rica|Mexico|Peru|Turkey|Venezuela 1
Argentina|Malaysia|Peru|Philippines|Ukraine 1
Australia|Austria|Belgium|Bulgaria|Canada|Estonia|Finland|Germany|Ireland|Latvia|Macedonia, The Former Yugoslav Republic of|Netherlands|New Zealand|Spain|United Kingdom 1
Australia|Belgium|France|South Africa|Spain 1
Australia|Brazil|Bulgaria|Canada|Chile|China|Hungary|Korea, Republic of|Mexico|Peru|Philippines|Poland|Romania|Russian Federation|South Africa|Ukraine|United Kingdom|Vietnam 1
Australia|Canada|Czech Republic|Hungary|Poland|South Africa|Spain 1
Australia|New Zealand|Slovakia|Sweden|United Kingdom 1
Australia|New Zealand|Sweden 1
Austria|Belgium|Denmark|Finland|France|Germany|Greece|Italy|Russian Federation|Slovakia|South Africa|Spain|Turkey|United Kingdom 1
Austria|Canada|Germany|Poland|South Africa 1
Austria|Czech Republic|Estonia|Germany|Latvia 1
Austria|Germany 1
Austria|Germany|Hungary|Slovenia 1
Austria|Germany|Poland|Romania|Slovakia|Slovenia 1
Austria|Germany|Ukraine 1
Austria|Italy|Poland|Spain 1
Austria|Poland|Ukraine 1
Belarus|Russian Federation 1
Belgium|Argentina|Australia|Austria|Bulgaria|Canada|Chile|China|Colombia|Croatia|Denmark|Estonia|Finland|France|Germany|Greece|Hungary|India|Latvia|Ireland|Israel|Italy|Japan|Jordan|Lebanon|Lithuania|Mexico|Netherlands|Peru|Philippines|Poland|Portugal|Romania|Russian Federation|Slovakia|Slovenia|South Africa|Spain|Sweden|Switzerland|Thailand|United Kingdom|Vietnam 1
Belgium|Canada|Denmark|Germany|Greece|Hungary|Ireland|Israel|Italy|Norway|Poland|Portugal|Spain|Sweden|Switzerland|Turkey|United Kingdom 1
Belgium|Canada|Denmark|Germany|Netherlands|United Kingdom 1
Belgium|Canada|Estonia|Germany|Hungary|India|Japan|Latvia|Lithuania|Malaysia|Netherlands|Poland|Russian Federation|Slovakia|Thailand|Turkey|Ukraine 1
Belgium|Colombia|Croatia|Germany|Guatemala|Hungary|Philippines|Russian Federation|Slovakia|South Africa|Turkey 1
Belgium|Czech Republic|Germany|Hungary|Israel|Poland|Russian Federation|South Africa|Spain|United Kingdom 1
Belgium|Denmark|France|Italy|Latvia|Lithuania|Netherlands|Norway|Poland|Russian Federation|Spain|Sweden 1
Belgium|Estonia|Finland|France|Germany|Italy|Latvia|Netherlands|Spain|Sweden 1
Belgium|Finland|France|Germany|Greece|Iceland|Ireland|Italy|Netherlands|Norway|Russian Federation|Spain|Sweden|United Kingdom 1
Belgium|France|Italy|Netherlands|Spain|Switzerland|United Kingdom 1
Belgium|Germany|United Kingdom 1
Belgium|Luxembourg 1
Belgium|United Kingdom 1
Brazil|Bulgaria|Chile|Croatia|Estonia|Germany|Greece|Hungary|Italy|Mexico|Romania|Russian Federation|South Africa 1
Brazil|Germany|Hungary|India|Netherlands|Poland|South Africa|Spain|Switzerland 1
Brazil|Germany|Hungary|Poland|Portugal|South Africa 1
Bulgaria 1
Bulgaria|Australia|Brazil|Chile|Colombia|Czechia|France|Germany|Hungary|Korea, Republic of|Mexico|New Zealand|Peru|Philippines|Poland|Romania|Russian Federation|Saudi Arabia|Slovakia|South Africa|Spain|Sweden|Thailand|Ukraine|Vietnam 1
Bulgaria|Canada|Czech Republic|Germany|Hungary|Mexico|Poland|Romania|Russian Federation|Slovakia|South Africa|Ukraine|United Kingdom 1
Bulgaria|Canada|Germany|Japan|Korea, Republic of|Netherlands|Poland|Slovakia 1
Bulgaria|Chile|Colombia|Estonia|Germany|Hungary|India|Italy|Japan|Korea, Republic of|Latvia|Lithuania|Malaysia|Peru|Philippines|Poland|Russian Federation|Slovakia|South Africa|Sweden|Thailand|Vietnam 1
Bulgaria|China|Germany|Netherlands|Romania|United Kingdom 1
Bulgaria|Czech Republic|Germany|Hungary|Poland|Russian Federation|Ukraine 1
Bulgaria|Czech Republic|Hungary|Poland 1
Bulgaria|Czechia|France|Hungary|India|Spain 1
Bulgaria|Czechia|Hungary|India|Poland|Romania|Russian Federation|Ukraine 1
Bulgaria|Denmark|Poland|United Kingdom 1
Bulgaria|France|Germany|Hungary|Italy|Poland|Romania|Russian Federation|Slovakia|Spain|Ukraine 1
Bulgaria|Germany 1
Bulgaria|Germany|Hungary|Italy|Poland|United Kingdom 1
Bulgaria|Germany|Hungary|Poland|Romania|Russian Federation|South Africa|Spain|Ukraine 1
Bulgaria|Germany|Italy|Netherlands|Poland 1
Bulgaria|Germany|Poland|Romania|United Kingdom 1
Bulgaria|Germany|South Africa 1
Bulgaria|Hungary|India|Poland|Romania 1
Bulgaria|Hungary|Poland|Romania|Russian Federation|Ukraine 1
Bulgaria|Italy|Ukraine 1
Bulgaria|Poland|Ukraine 1
Canada|Belgium|Denmark|France|Germany|Italy|Netherlands|South Africa 1
Canada|Denmark|United Kingdom 1
Canada|France|Germany|Hungary|India|Italy 1
Canada|France|United States|Argentina|Belgium|Germany|Netherlands|Spain|Sweden 1
Canada|Germany 1
Canada|Hungary|South Africa 1
Canada|Netherlands|Sweden 1
Chile|Croatia|Czech Republic|Greece|Iceland|Latvia|Lithuania|Portugal|Slovakia|Slovenia 1
Chile|United States|Argentina|Canada|Czech Republic|France|Germany|Japan|Korea, Republic of|Mexico|Philippines|Poland|Russian Federation|Spain|United Kingdom 1
China|India| 1
China|India|Indonesia|Taiwan|Thailand 1
China|Korea, Republic of|Philippines|Taiwan 1
Colombia 1
Croatia|Czechia|Germany|Italy|Latvia|Poland|Romania|Slovakia 1
Cyprus|Greece|Israel 1
Czech Republic 1
Czech Republic|Germany|Poland|Russian Federation|Ukraine 1
Czech Republic|India|Poland|Russian Federation|United Kingdom 1
Czechia|France|Germany|Hungary|Poland|Romania 1
Czechia|United States|Argentina|Australia|Belgium|Canada|Chile|France|Germany|Italy|Japan|Korea, Republic of|Netherlands|Poland|Russian Federation|Spain|Ukraine|United Kingdom 1
Denmark|Finland|Norway 1
Denmark|Germany|Netherlands 1
Denmark|Hungary|Poland|Sweden 1
Denmark|Switzerland 1
Denmark|United Kingdom 1
El Salvador 1
Estonia|Finland 1
Finland|Austria|Belgium|Czech Republic|Denmark|France|Germany|Hungary|Israel|Italy|Netherlands|Poland|Russian Federation|Spain|Sweden|United Kingdom 1
Finland|Norway|Sweden 1
Finland|United Kingdom 1
France|Denmark|Germany|Spain|Sweden|United Kingdom 1
France|Germany|Hungary|South Africa 1
France|Germany|Italy 1
France|Germany|Netherlands|Spain 1
France|Germany|Netherlands|United Kingdom 1
France|Germany|Poland 1
France|United States|Argentina|Canada|Czechia|Finland|Germany|Guatemala|Hungary|India|Israel|Italy|Korea, Republic of|Mexico|Panama|Poland|Portugal|Romania|Russian Federation|Singapore|Slovakia|South Africa|Turkey|United Kingdom 1
Georgia 1
Georgia|United States|Hungary|Russian Federation|Ukraine 1
Germany|Hungary|Latvia|Lithuania|Russian Federation|Ukraine 1
Germany|Hungary|Netherlands|Poland|Romania|United Kingdom 1
Germany|Hungary|Poland|Romania|United Kingdom 1
Germany|Hungary|South Africa 1
Germany|India 1
Germany|Italy 1
Germany|Lithuania|Poland 1
Germany|Netherlands|South Africa 1
Germany|New Zealand|United Kingdom 1
Germany|Poland|Ukraine 1
Germany|South Africa 1
Germany|Sweden|United Kingdom 1
Germany|United States|Australia|Bulgaria|Canada|Chile|Croatia|Israel|Mexico|New Zealand|Peru|Philippines|Russian Federation|South Africa|Thailand|Ukraine 1
Germany|United States|Hungary|Poland 1
Hungary 1
Hungary|Poland|Russian Federation 1
Hungary|Poland|United Kingdom 1
Hungary|United States|Argentina|Australia|Belgium|Canada|Czechia|France|Germany|Israel|Japan|Korea, Republic of|Mexico|New Zealand|Poland|Romania|Russian Federation|South Africa|Spain|Turkey|Ukraine 1
Indonesia 1
Iran, Islamic Republic of 1
Ireland|United Kingdom 1
Italy|Russian Federation|Spain|Ukraine 1
Japan|Korea, Republic of 1
Japan|United States|Argentina|Australia|Belgium|Brazil|Canada|Chile|Colombia|Denmark|France|Germany|Hungary|Israel|Italy|Korea, Republic of|Mexico|Netherlands|Poland|Romania|Russian Federation|South Africa|Spain|Taiwan|Turkey|Ukraine|United Kingdom 1
Japan|United States|Argentina|Australia|Canada|Germany|Italy|Korea, Republic of|Netherlands|Poland|Romania|Russian Federation|South Africa|Spain|United Kingdom 1
Japan|United States|Argentina|Brazil|Mexico|Romania|Russian Federation|Slovakia|South Africa|Ukraine 1
Japan|United States|Bulgaria|Germany|Hungary|Poland|South Africa|Ukraine 1
Malaysia 1
Malaysia|Taiwan 1
Mexico 1
New Zealand|South Africa 1
New Zealand|United Kingdom 1
Norway|Sweden 1
Panama 1
Peru 1
Peru|United States|Argentina|Belgium|Bulgaria|Canada|Germany|Hungary|Mexico|New Zealand|Poland|Romania|Russian Federation|Ukraine 1
Peru|United States|Argentina|Brazil|Bulgaria|Canada|Colombia|Mexico|Poland|Russian Federation 1
Philippines 1
Poland|United States|Australia|France|Ukraine|United Kingdom 1
Poland|United States|Belgium|France|Germany|Netherlands|Ukraine 1
Poland|United States|Canada|Czech Republic|Hungary|Russian Federation|South Africa|Ukraine 1
Russian Federation|Ukraine 1
Russian Federation|United Kingdom 1
Saudi Arabia 1
Singapore 1
Slovakia|United States|Argentina|Canada|Czechia|Germany|Serbia|South Africa|Spain|Ukraine|United Kingdom 1
Slovenia 1
South Africa|United States|Argentina|Chile|Hungary|Mexico|Peru|Poland|Romania|Ukraine 1
Sweden|Denmark|Finland|Germany|Norway|United Kingdom 1
Uganda 1
Ukraine|United States|Argentina|Australia|Canada|France|Germany|Japan|Korea, Republic of|Netherlands|Poland|Romania|Russian Federation|Spain 1
United States|Argentina|Australia|Austria|Belgium|Brazil|China|Denmark|Estonia|Finland|France|Germany|Greece|Guatemala|Hungary|Iceland|Ireland|Latvia|Lithuania|Philippines|Poland|Romania|Singapore|Spain|Switzerland|United Kingdom|Vietnam 1
United States|Argentina|Australia|Austria|Brazil|Canada|France|Germany|Israel|Japan|Korea, Republic of|Russian Federation|Saudi Arabia|South Africa|Taiwan|Ukraine|United Kingdom|Vietnam 1
United States|Argentina|Australia|Austria|Brazil|Canada|France|Germany|Israel|Korea, Republic of|Poland|Russian Federation|Saudi Arabia|South Africa|Taiwan|Turkey|Ukraine|Vietnam 1
United States|Argentina|Australia|Belgium|Brazil|Canada|Czech Republic|Germany|Guatemala|Hungary|Latvia|Lithuania|Poland|Romania|Russian Federation|Slovakia|Ukraine 1
United States|Argentina|Australia|Belgium|Bulgaria|Canada|Czechia|France|Germany|Hungary|Israel|Italy|Japan|Korea, Republic of|Mexico|New Zealand|Peru|Poland|Romania|Russian Federation|Serbia|Slovakia|South Africa|Spain|Ukraine|United Kingdom 1
United States|Argentina|Australia|Belgium|Canada|Chile|Czechia|France|Germany|Italy|Japan|Korea, Republic of|Mexico|Netherlands|Poland|Russian Federation|Spain|Ukraine|United Kingdom 1
United States|Argentina|Australia|Belgium|Canada|Chile|France|Germany|Italy|Japan|Korea, Republic of|Mexico|Russian Federation|Spain|Ukraine|United Kingdom 1
United States|Argentina|Australia|Belgium|Czechia|France|Germany|Hungary|Israel|Italy|Korea, Republic of|Mexico|Netherlands|Poland|Russian Federation|Spain|Ukraine 1
United States|Argentina|Australia|Brazil|Bulgaria|Canada|Chile|Czechia|France|Germany|Japan|Korea, Republic of|Peru|Philippines|Poland|Romania|Russian Federation|South Africa|Spain|Sweden|Turkey|Ukraine|United Kingdom|Vietnam 1
United States|Argentina|Australia|Brazil|Canada|Chile|Colombia|France|Germany|Hungary|Italy|Japan|Korea, Republic of|Mexico|Poland|Russian Federation|South Africa|Spain|Taiwan|Turkey|Ukraine|United Kingdom 1
United States|Argentina|Australia|Brazil|Canada|Chile|Colombia|Hungary|Italy|Lithuania|Mexico|Poland|Romania|Russian Federation|South Africa|Spain|Turkey|Ukraine 1
United States|Argentina|Australia|Brazil|Canada|Chile|Colombia|Hungary|Italy|Lithuania|Mexico|Poland|Russian Federation|South Africa|Spain|Turkey|Ukraine 1
United States|Argentina|Australia|Bulgaria|Canada|Chile|Czechia|France|Germany|Poland|Russian Federation|Spain|Turkey|Ukraine|United Kingdom 1
United States|Argentina|Australia|Bulgaria|Germany|Guatemala|Hungary|Israel|Latvia|Mexico|Philippines|Portugal|South Africa|Ukraine 1
United States|Argentina|Australia|Chile|France|Italy|Japan|Korea, Republic of|Mexico|New Zealand|Poland|Russian Federation|South Africa|Spain|Turkey|Ukraine 1
United States|Argentina|Australia|Germany|Japan|Mexico|Philippines|Poland|Romania|Russian Federation|Ukraine 1
United States|Argentina|Austria|Bulgaria|Canada|Colombia|France|Greece|Guatemala|Hungary|India|Italy|Japan|Mexico|Netherlands|Peru|Poland|Romania|Russian Federation|South Africa|Turkey|United Kingdom 1
United States|Argentina|Belgium|Brazil|Canada|Chile|Colombia|Hungary|Israel|Italy|Mexico|Netherlands|Poland|Romania|Russian Federation|Spain|Ukraine 1
United States|Argentina|Belgium|Brazil|Canada|Colombia|France|Hungary|Israel|Mexico|Netherlands|Poland|Sweden 1
United States|Argentina|Belgium|Bulgaria|Canada|Czechia|Estonia|France|Germany|Greece|Italy|Netherlands|Norway|Peru|Russian Federation|Slovakia|Spain|Ukraine|United Kingdom 1
United States|Argentina|Belgium|Bulgaria|Canada|Czechia|Germany|Korea, Republic of|New Zealand|Peru|Poland|Romania|Russian Federation|South Africa|Ukraine 1
United States|Argentina|Belgium|Bulgaria|Colombia|Germany|Hungary|Korea, Republic of|Peru|Poland|Slovakia|Spain|Taiwan|Ukraine|Vietnam 1
United States|Argentina|Belgium|Canada|Chile|France|Germany|Korea, Republic of|Netherlands|Peru|Philippines|Poland|Russian Federation|South Africa|Sweden|Thailand 1
United States|Argentina|Belgium|Canada|Czechia|Germany|Italy|Netherlands|Poland 1
United States|Argentina|Belgium|Canada|France|Germany|Israel|Japan|Netherlands|South Africa 1
United States|Argentina|Belgium|Czech Republic|Germany|Poland|Russian Federation 1
United States|Argentina|Belgium|Denmark|France|Germany|Israel|Slovakia 1
United States|Argentina|Brazil|Bulgaria|Chile|Colombia|Czech Republic|France|Germany|India|Italy|Korea, Republic of|Mexico|Panama|Peru|Philippines|Poland|Puerto Rico|Romania|Russian Federation|Slovakia|South Africa|Thailand|Ukraine|United Kingdom|Vietnam 1
United States|Argentina|Brazil|Canada|Colombia|Costa Rica|Panama|Peru|Philippines|Taiwan 1
United States|Argentina|Brazil|Canada|Colombia|Czechia|France|Germany|Hungary|Israel|Italy|Japan|Korea, Republic of|Mexico|Peru|Poland|Portugal|Slovakia|South Africa|Spain|Taiwan|Ukraine|United Kingdom 1
United States|Argentina|Brazil|Canada|France|Germany|Greece|Korea, Republic of|Mexico|Peru|Romania|Russian Federation|Slovakia|Taiwan|Ukraine 1
United States|Argentina|Bulgaria|Canada|Chile|Colombia|Croatia|Hong Kong|Hungary|India|Mexico|Philippines|Puerto Rico|Singapore|Taiwan|Thailand 1
United States|Argentina|Bulgaria|Canada|Chile|France|Germany|Korea, Republic of|Poland|Spain|Turkey|Ukraine 1
United States|Argentina|Bulgaria|Canada|Czech Republic|France|Germany|Hungary|Italy|Mexico|Poland|Portugal|Slovakia|Switzerland 1
United States|Argentina|Canada|Chile|Germany|Japan|Philippines|Poland|Romania|Sweden|Ukraine 1
United States|Argentina|Canada|China|Germany|Italy|Japan|Mexico|Poland|Romania|Russian Federation|South Africa|Spain 1
United States|Argentina|Canada|Czech Republic|France|Germany|Hungary|Italy|Peru|Slovakia|Spain|Turkey 1
United States|Argentina|Chile|France|Mexico|Russian Federation 1
United States|Argentina|Chile|Germany|Mexico|Netherlands|Poland|Romania|Russian Federation|Sweden|Ukraine 1
United States|Argentina|Chile|Korea, Republic of|Netherlands|Philippines 1
United States|Argentina|Chile|Mexico|Poland|Russian Federation|Turkey|Ukraine 1
United States|Argentina|Chile|Peru|Puerto Rico 1
United States|Argentina|Chile|Russian Federation|Thailand 1
United States|Argentina|Colombia|Mexico|Peru 1
United States|Argentina|Czechia|Germany|Serbia|Slovakia|Ukraine 1
United States|Argentina|Germany 1
United States|Argentina|Germany|Hungary|Mexico|Philippines|Saudi Arabia|Slovakia|South Africa|Turkey 1
United States|Argentina|Germany|Korea, Republic of|Poland|Turkey|Ukraine 1
United States|Argentina|Germany|Peru|Poland 1
United States|Argentina|Germany|Poland|Russian Federation 1
United States|Argentina|Germany|Russian Federation|Ukraine 1
United States|Argentina|Netherlands|Brazil|Chile|Czechia|Germany|Korea, Republic of|Mexico|Romania|Russian Federation|Spain 1
United States|Argentina|Poland|Romania|Russian Federation|South Africa 1
United States|Argentina|Slovakia|Canada|Czechia|Greece|India|Israel|Italy|Japan|Lebanon|Malaysia|Mexico|Netherlands|Russian Federation|Serbia|South Africa|Spain|Taiwan 1
United States|Australia|Belgium|Canada|Czechia|Denmark|France|Mexico|Netherlands|New Zealand|Poland|Puerto Rico|Slovakia|Slovenia|Spain|United Kingdom 1
United States|Australia|Belgium|Chile|Colombia|Czech Republic|Denmark|Hungary|Israel|Malaysia|New Zealand|Philippines|Poland|Russian Federation|South Africa|Sweden|Thailand 1
United States|Australia|Brazil|Bulgaria|Czech Republic|France|Italy|Korea, Republic of|Mexico|Peru|Poland|Russian Federation|South Africa|Spain|Turkey|United Kingdom|Vietnam 1
United States|Australia|Brazil|Canada|Denmark|Netherlands|United Kingdom 1
United States|Australia|Bulgaria|Canada|Chile|Czechia|Estonia|France|Germany|Mexico|Netherlands|Peru|Poland|Russian Federation|South Africa|Thailand 1
United States|Australia|Bulgaria|Canada|Croatia|Germany|Greece|Hungary|Ireland|Israel|New Zealand|Poland|Romania|Russian Federation|Serbia|South Africa|Spain|Ukraine|United Kingdom 1
United States|Australia|Bulgaria|Germany|Hungary|Israel|Poland|Russian Federation|Serbia|Singapore|South Africa|Sweden|Ukraine 1
United States|Australia|Canada|Chile|Costa Rica|Germany|Latvia|Lithuania|Mexico|Peru|Poland|Russian Federation|Spain 1
United States|Australia|Canada|Colombia|Korea, Republic of|Mexico|New Zealand|Peru|Philippines|Taiwan 1
United States|Australia|Canada|Czech Republic|France|Germany|Mexico|Netherlands|Poland|United Kingdom 1
United States|Australia|Canada|Denmark|Germany|Italy|Japan|Netherlands|New Zealand|Russian Federation|Serbia|South Africa|Turkey|Ukraine|United Kingdom 1
United States|Australia|Canada|Denmark|Germany|Italy|Japan|Netherlands|Russian Federation|Serbia|South Africa|Turkey|Ukraine|United Kingdom 1
United States|Australia|Canada|France|Germany|United Kingdom 1
United States|Australia|Canada|Germany|Russian Federation|Sweden|United Kingdom 1
United States|Australia|Canada|Mexico|Russian Federation|Ukraine 1
United States|Australia|New Zealand|South Africa 1
United States|Austria|Argentina|Australia|Belgium|Bulgaria|Canada|Chile|Colombia|Croatia|Czechia|Germany|Hungary|Italy|Korea, Republic of|Latvia|Lithuania|Malaysia|Mexico|Peru|Philippines|Poland|Romania|Russian Federation|Serbia|Slovakia|South Africa|Spain|Taiwan|Thailand|Ukraine|United Kingdom 1
United States|Austria|Belgium|Canada|Czechia|France|Germany|Poland|Spain|Ukraine|United Kingdom 1
United States|Austria|Belgium|Canada|Denmark|Finland|France|Germany|Italy|Netherlands|Norway|Spain|Sweden|United Kingdom 1
United States|Austria|Belgium|Canada|Finland|Hungary|Korea, Republic of|Netherlands|Poland|Russian Federation 1
United States|Austria|Croatia|Czech Republic|Finland|France|Greece|Hungary|India|Ireland|Italy|New Zealand|Norway|Pakistan|Philippines|Poland|Portugal|Russian Federation|Singapore|South Africa|Spain|Taiwan|Thailand|United Kingdom 1
United States|Austria|Germany|Hungary|Slovakia|Slovenia 1
United States|Austria|Germany|Italy|Korea, Republic of|New Zealand|Sweden|Turkey|United Kingdom 1
United States|Belgium|Bulgaria|Canada|Denmark|France|Germany|Hungary|Italy|Latvia|Netherlands|Portugal|Russian Federation|Spain|United Kingdom 1
United States|Belgium|Bulgaria|Czech Republic|France|Germany|Hungary|Netherlands|Poland|Sweden|United Kingdom 1
United States|Belgium|Canada|France|Germany|Korea, Republic of|Netherlands|Poland|Taiwan|United Kingdom 1
United States|Belgium|Colombia|Czech Republic|Germany|India|Korea, Republic of|Poland|Romania|South Africa 1
United States|Belgium|Finland|Germany|Korea, Republic of|Latvia|Lithuania|Malaysia|Netherlands|Philippines|Ukraine 1
United States|Belgium|Germany|Japan|Latvia|Lithuania 1
United States|Belgium|Germany|Korea, Republic of|Romania 1
United States|Belgium|Germany|Poland|Romania 1
United States|Brazil|Bulgaria|Canada|Colombia|Germany|Hungary|India|Israel|Italy|Korea, Republic of|Peru|Puerto Rico|Russian Federation|Spain|Sweden|Tunisia|Vietnam 1
United States|Brazil|Bulgaria|Canada|Czech Republic|Georgia|New Zealand|Poland|Puerto Rico|Romania|Russian Federation|Slovakia|South Africa|United Kingdom 1
United States|Brazil|Bulgaria|Puerto Rico 1
United States|Brazil|Canada|Costa Rica|Germany 1
United States|Brazil|Chile|Costa Rica|Estonia|Israel|Latvia|Mexico|Poland|Puerto Rico|Russian Federation 1
United States|Brazil|China|Colombia|Germany|India|Japan|Mexico|Peru|Poland|Romania 1
United States|Brazil|China|Guatemala|India|Japan|Latvia|Mexico|Peru|Poland|Russian Federation 1
United States|Brazil|Colombia|Czech Republic|Hungary|India|Korea, Republic of|Peru|Slovakia 1
United States|Brazil|Latvia|Puerto Rico 1
United States|Bulgaria|Canada|Estonia|France|Germany|Korea, Republic of|Mexico|Peru|Philippines|Poland|Russian Federation|Slovakia|Sweden 1
United States|Bulgaria|Canada|Germany|Guatemala|Hungary|Korea, Republic of|Latvia|Lithuania|Norway|Portugal|Romania|Russian Federation|Sweden|Ukraine|United Kingdom 1
United States|Bulgaria|China|Croatia|Czechia|Egypt|Estonia|Germany|Guatemala|Hungary|India|Ireland|Japan|Korea, Republic of|Latvia|Lithuania|Mexico|Poland|Romania|Russian Federation|Serbia|Slovakia|South Africa|United Kingdom 1
United States|Bulgaria|Croatia|Hungary|Israel|Poland|Serbia|Spain|Ukraine 1
United States|Bulgaria|Czechia|Hungary|Israel|Japan|Latvia|Lithuania|Serbia|Slovakia|South Africa|Ukraine 1
United States|Bulgaria|Georgia|Germany|Japan|Latvia|Mexico|Peru|Philippines|Poland|Puerto Rico|Russian Federation|South Africa|Sweden|Ukraine 1
United States|Bulgaria|Germany|Hungary|Poland|Romania|Ukraine|United Kingdom 1
United States|Bulgaria|Germany|Mexico|Peru|Poland 1
United States|Bulgaria|Hungary|Latvia|Poland|Slovakia|South Africa 1
United States|Bulgaria|Japan|Poland|Romania|Ukraine 1
United States|Canada|Denmark|France|Germany|Netherlands|Romania|United Kingdom 1
United States|Canada|Denmark|Germany|Sweden|United Kingdom 1
United States|Canada|Denmark|Germany|United Kingdom 1
United States|Canada|Denmark|Sweden|United Kingdom 1
United States|Canada|Estonia|Germany|Greece|Korea, Republic of|Mexico|Philippines|Poland|Romania|Russian Federation|Slovakia|South Africa 1
United States|Canada|Estonia|Poland 1
United States|Canada|France|Germany 1
United States|Canada|France|Germany|Israel|United Kingdom 1
United States|Canada|France|Germany|Netherlands|Sweden|United Kingdom 1
United States|Canada|France|Ireland|Sweden|United Kingdom 1
United States|Canada|Germany|Hungary|Poland|Slovakia 1
United States|Canada|Germany|Italy|Netherlands|Spain|United Kingdom 1
United States|Canada|India|Romania 1
United States|Canada|Japan|Poland 1
United States|Canada|Netherlands|Russian Federation|Sweden 1
United States|Canada|Poland|Romania|Russian Federation 1
United States|Chile|Germany|Hungary|Italy|Korea, Republic of|Latvia|Mexico|Russian Federation|Slovakia|Spain|Ukraine 1
United States|Chile|Germany|Hungary|Korea, Republic of|Philippines 1
United States|Colombia|Peru 1
United States|Costa Rica|India 1
United States|Croatia|Czechia|Germany|Hungary|Poland 1
United States|Croatia|Mexico|Poland|Ukraine 1
United States|Estonia|France|Germany 1
United States|France|Germany|Jordan|Netherlands|United Kingdom 1
United States|France|Germany|Netherlands|Norway|Poland|South Africa|United Kingdom 1
United States|Germany 1
United States|Germany|Argentina|Australia|Belgium|Canada|Chile|Colombia|Czechia|France|Hungary|Israel|Italy|Japan|Korea, Republic of|Mexico|New Zealand|Poland|Romania|Russian Federation|Serbia|Slovakia|South Africa|Spain|Turkey|Ukraine|United Kingdom 1
United States|Germany|Japan|Poland|Romania|Russian Federation 1
United States|Germany|Japan|Poland|Romania|Ukraine 1
United States|Germany|Latvia|Lithuania|Slovenia 1
United States|Germany|Peru|Poland|Ukraine 1
United States|Germany|Thailand|Ukraine 1
United States|Germany|United Kingdom 1
United States|Hungary|Canada|Czechia|Poland|Russian Federation|South Africa|Thailand|Ukraine 1
United States|Hungary|Mexico|Poland|Russian Federation|South Africa 1
United States|Hungary|Poland|United Kingdom 1
United States|Italy|Argentina|Australia|Austria|Belgium|Bulgaria|Canada|Chile|Colombia|Croatia|Czechia|Denmark|Germany|Hungary|Indonesia|Korea, Republic of|Latvia|Lithuania|Malaysia|Mexico|Peru|Philippines|Poland|Romania|Russian Federation|Serbia|Slovakia|South Africa|Spain|Taiwan|Ukraine|United Kingdom 1
United States|Japan 1
United States|Japan|Canada|Chile|Czechia|Italy|Mexico|Philippines|Russian Federation|South Africa|Taiwan|Ukraine|United Kingdom 1
United States|Japan|Poland|United Kingdom 1
United States|Kenya|Peru|Puerto Rico 1
United States|Mexico|Netherlands|Peru|Poland|Russian Federation 1
United States|Mexico|Panama|Slovakia 1
United States|Mexico|Peru|Romania|Ukraine 1
United States|Mexico|Peru|Russian Federation 1
United States|Philippines|Argentina|Chile|Georgia|Germany|Japan|Mexico|Peru|Poland|Puerto Rico|Slovakia|South Africa|Ukraine 1
United States|Philippines|Poland|Romania|Ukraine 1
United States|Russian Federation|Ukraine 1
United States|South Africa 1
United States|South Africa|United Kingdom 1
United States|Thailand 1
Venezuela 1

Sites per Study

Site_count Study_Count
1 1056
2 127
3 50
4 38
5 40
6 23
7 24
8 20
9 13
10 15
11 13
12 10
13 12
14 8
15 12
16 12
17 5
18 10
19 12
20 6
21 6
22 4
24 9
25 6
26 4
27 6
28 7
29 5
30 5
31 3
32 5
33 6
34 1
35 6
36 1
37 2
38 2
39 7
40 2
41 5
42 3
43 5
44 3
45 1
46 2
47 4
49 3
50 3
51 2
52 2
53 3
54 3
55 3
56 1
57 7
58 3
59 2
60 4
62 2
63 3
64 3
65 2
66 4
67 1
68 2
69 2
70 3
71 7
73 1
74 4
75 3
76 2
77 1
79 2
80 2
81 1
82 5
84 1
87 4
89 3
90 1
91 1
92 3
93 2
94 1
95 2
96 2
97 1
98 1
99 2
100 2
101 3
102 2
103 1
104 1
106 1
107 2
108 1
109 2
110 1
111 1
113 1
114 2
118 1
121 2
122 2
123 1
125 1
126 1
127 1
128 2
131 1
134 2
135 1
137 2
138 2
139 1
140 1
142 2
143 1
144 1
145 1
146 1
147 1
149 2
150 1
154 2
155 1
165 2
167 1
178 1
179 1
180 1
181 2
183 2
186 1
189 1
200 1
201 1
206 1
210 1
217 1
226 1
230 1
232 1
233 2
234 1
235 1
243 1
244 1
255 1
257 1
281 1
292 1
300 1
342 1
350 1
365 1
389 1
390 1
409 1
431 1
468 1
532 1
808 1
819 1

Phase

Phase Study_Count
N/A 553
Phase 3 415
Phase 2 393
Phase 4 253
Phase 1 145
Phase 1/Phase 2 26
Phase 2/Phase 3 25
Early Phase 1 12

Number of Arms

Number_of_Arms Count_of_Studies
1 231
2 871
3 222
4 151
5 43
6 46
7 9
8 7
9 2
10 2
11 2
12 4
13 1
14 1
15 1
16 1
18 1
NA 227

Number of Updates

Count of Versions Count of Studies
1 142
2 185
3 225
4 193
5 173
6 135
7 127
8 106
9 76
10 49
11 47
12 32
13 26
14 28
15 22
16 13
17 15
18 9
19 7
20 18
21 10
22 10
23 8
24 11
25 13
26 4
27 8
28 4
29 7
30 7
32 5
33 8
34 7
35 1
36 3
37 2
38 1
39 2
40 4
41 4
42 2
43 2
44 6
45 2
46 1
47 1
48 2
49 3
50 2
51 2
53 2
54 1
55 4
57 1
58 4
61 5
62 2
63 2
64 1
65 1
66 2
71 3
73 1
74 1
77 2
79 2
80 1
82 1
83 1
84 1
85 1
90 1
92 1
94 1
99 1
103 1
104 1
106 2
107 1
112 1
139 1
166 1
503 1

Update History Change Type

Change Type Count_of_Changes Count_of_Studies ratio
Study Status 16474 1680 9.805952
Contacts/Locations 8067 1407 5.733475
Recruitment Status 2811 1445 1.945329
Study Design 2229 1284 1.735981
None (earliest Version on record) 1822 1822 1.000000
Outcome Measures 1767 949 1.861960
Sponsor/Collaborators 1332 827 1.610641
Arms 1211 784 1.544643
Interventions 1211 784 1.544643
Study Identification 1141 699 1.632332
Eligibility 1132 681 1.662261
Study Description 858 599 1.432387
More Information 823 321 2.563863
Oversight 804 648 1.240741
References 575 437 1.315789
Results 430 430 1.000000
Baseline Characteristics 297 208 1.427885
IPDSharing 281 269 1.044610
Conditions 235 187 1.256684
Participant Flow 154 136 1.132353
Reported Adverse Events 154 135 1.140741
Results Submission Events 147 147 1.000000
Documents 100 89 1.123595
2020 Study Status 2 2 1.000000
Quality Control Review has not concludedReturned: February 13 1 1 1.000000
Quality Control Review has not concludedReturned: June 16 1 1 1.000000

Enrollment Metrics by Phase

Measure Early.Phase.1 N.A Phase.1 Phase.1.Phase.2 Phase.2 Phase.2.Phase.3 Phase.3 Phase.4
Min. 9.00 1.0000 7.00000 10.00000 2.0000 10 0.0000 5.0000
1st Qu. 24.75 34.0000 22.00000 20.25000 32.0000 45 132.0000 40.0000
Median 48.00 72.5000 36.00000 36.50000 64.0000 144 351.0000 100.0000
Mean 68.00 287.9111 72.52448 52.34615 173.3907 306 561.5795 365.8968
3rd Qu. 61.50 205.5000 60.00000 63.00000 210.0000 408 689.0000 281.2500
Max. 328.00 14978.0000 879.00000 280.00000 2283.0000 2285 12460.0000 11751.0000

Trial Group Type

group_type Group_Count
Experimental 2097
Active Comparator 931
Placebo Comparator 661
NA 227
No Intervention 166
Other 155
Sham Comparator 27

Intervention Model

intervention_model Study_Count
Parallel Assignment 1149
Crossover Assignment 347
Single Group Assignment 280
NA 23
Factorial Assignment 17
Sequential Assignment 6

Primary Purpose

primary_purpose Study_Count
Treatment 1316
Health Services Research 91
Prevention 91
Basic Science 82
Other 64
Supportive Care 61
Diagnostic 57
NA 55
Screening 3
Device Feasibility 2

Observational Studies

Studies by Country

Country Study_Count
United States 137
NA 89
United Kingdom 40
France 27
Canada 18
Italy 16
Netherlands 13
Spain 13
China 12
Germany 11
Japan 9
Greece 7
Thailand 7
Belgium 6
Israel 6
Hong Kong 5
Korea, Republic of 5
Poland 5
Brazil 4
Russian Federation 3
Switzerland 3
Taiwan 3
Turkey 3
Austria 2
Denmark 2
Finland 2
Hungary 2
Malaysia 2
Portugal 2
Saudi Arabia 2
United Arab Emirates 2
United States|Puerto Rico 2
Algeria|Egypt|Iran, Islamic Republic of|Iraq|Jordan|Kuwait|Lebanon|Qatar|Saudi Arabia|Tunisia|United Arab Emirates 1
Argentina 1
Argentina|Chile|Colombia|Costa Rica|Hong Kong|Mexico|Saudi Arabia 1
Australia|United States|Argentina|Brazil|Canada|China|Colombia|Denmark|France|Germany|Italy|Japan|Korea, Republic of|Mexico|Netherlands|Norway|Spain|Sweden|United Kingdom 1
Belgium|Bulgaria|Czechia|Denmark|Germany|Greece|Hungary|Netherlands|Norway|Portugal|Sweden|United Kingdom 1
Bulgaria|Czechia|France|Germany|Greece|Hungary|Italy|Netherlands|Poland|Romania|Slovenia|Spain 1
Chile 1
Colombia 1
Costa Rica 1
Croatia 1
Czech Republic 1
Czechia 1
Egypt 1
Guinea-Bissau 1
Latvia 1
Lithuania 1
Malawi|South Africa 1
Philippines 1
Puerto Rico 1
Qatar|Kuwait|Oman|United Arab Emirates 1
Romania 1
Serbia 1
Singapore 1
Slovenia 1
Spain|Croatia|Denmark|Ireland|Italy|Netherlands|Norway|Portugal|Sweden|United Kingdom 1
Sweden 1
Taiwan|Vietnam 1
United States|Brazil|Canada|China|Germany|Italy|Netherlands|Spain 1
United States|Canada 1
Vietnam 1

Sites per Study

Site_count Study_Count
1 372
2 27
3 6
4 13
5 5
6 5
7 1
8 6
9 2
10 4
11 3
12 4
13 3
14 1
15 3
17 1
18 2
19 1
21 1
22 1
24 1
26 2
32 2
34 1
36 1
37 1
40 1
44 1
47 3
51 1
53 1
57 1
75 1
80 1
94 1
98 1
100 1
141 1
153 1
175 1
298 1
703 1
728 1
910 1
1054 1

Number of Updates

Count of Versions Count of Studies
1 57
2 105
3 95
4 54
5 42
6 28
7 15
8 23
9 6
10 13
11 10
12 5
13 5
14 2
15 2
16 3
17 3
18 2
19 2
20 2
21 1
22 1
23 1
24 1
27 1
28 2
31 1
37 1
39 1
42 1
80 1
89 1
104 1
138 1
174 1

Update History Change Type

Change Type Count_of_Changes Count_of_Studies ratio
Study Status 2534 433 5.852194
Contacts/Locations 744 308 2.415584
Recruitment Status 499 335 1.489552
None (earliest Version on record) 490 490 1.000000
Study Design 465 308 1.509740
Study Description 367 122 3.008197
Eligibility 246 165 1.490909
Sponsor/Collaborators 209 166 1.259036
Study Identification 203 146 1.390411
Outcome Measures 177 129 1.372093
Groups 121 94 1.287234
Interventions 121 94 1.287234
References 105 71 1.478873
Oversight 103 88 1.170454
Conditions 35 32 1.093750
IPDSharing 27 25 1.080000
Results 27 27 1.000000
More Information 21 8 2.625000
Documents 8 6 1.333333
Results Submission Events 8 8 1.000000
Baseline Characteristics 5 5 1.000000
Participant Flow 1 1 1.000000
Reported Adverse Events 1 1 1.000000

Enrollment Metrics

Measure Observational
Min 1.000
1st Qu 60.000
Median 150.000
Mean 9831.966
3rd Qu 699.000
Max 815377.000

Observation Model

observational_model Study_Count
Cohort 219
NA 87
Case-Only 51
Case-Control 42
Case Control 37
Other 28
Ecologic or Community 8
Case-Crossover 7
Family-Based 4
Defined Population, Natural History 3
Natural History 3
Defined Population 1

Time Perspective

time_perspective Study_Count
Prospective 272
Cross-Sectional 90
Retrospective 63
NA 53
Other 5
Longitudinal, Prospective 3
Cross-Sectional, Prospective 2
Cross-Sectional, Retrospective 2

Registries

Studies by Country

Country Study_Count
United States 6
France 3
Turkey 3
Germany 2
Korea, Republic of 2
United Kingdom 2
Australia|Czechia|Germany|Italy|Netherlands|South Africa|Spain|United Kingdom 1
Canada 1
China 1
Denmark 1
Finland 1
Hong Kong 1
Israel 1
Japan 1
Nepal 1
Russian Federation 1
Spain 1
Switzerland 1
United States|Puerto Rico 1

Sites per Study

Site_count Study_Count
1 17
2 4
3 2
7 1
9 1
10 1
19 1
30 1
37 1
79 1
137 1

Number of Updates

Count of Versions Count of Studies
1 5
2 9
3 3
4 4
5 2
6 1
7 2
8 1
10 1
26 1
28 1
30 1

Update History Change Type

Change Type Count_of_Changes Count_of_Studies ratio
Study Status 148 26 5.692308
Contacts/Locations 77 18 4.277778
None (earliest Version on record) 31 31 1.000000
Recruitment Status 22 15 1.466667
Outcome Measures 18 13 1.384615
Study Design 18 11 1.636364
Study Description 11 9 1.222222
Eligibility 10 9 1.111111
Oversight 9 9 1.000000
References 8 5 1.600000
Sponsor/Collaborators 7 5 1.400000
Study Identification 6 4 1.500000
Conditions 5 5 1.000000
IPDSharing 3 3 1.000000
Documents 1 1 1.000000
Groups 1 1 1.000000
Interventions 1 1 1.000000
Results 1 1 1.000000
Results Submission Events 1 1 1.000000

Enrollment Metrics

Measure Registries
Min 25.0000
1st Qu 95.0000
Median 307.0000
Mean 948.0645
3rd Qu 790.0000
Max 7000.0000

Registry Model

observational_model Study_Count
Cohort 21
Case-Only 4
Case-Control 3
Other 2
Case Control 1

Time Perspective

time_perspective Study_Count
Prospective 28
Cross-Sectional 2
Other 1

Follow-up

target_duration Study_Count
5 Years 3
1 Day 2
12 Months 2
2 Months 2
3 Months 2
3 Years 2
1 Month 1
1 Year 1
10 Years 1
12 Weeks 1
12 Years 1
13 Months 1
15 Years 1
156 Weeks 1
2 Years 1
20 Months 1
22 Months 1
35 Years 1
5 Weeks 1
6 Months 1
6 Years 1
7 Years 1
8 Weeks 1
9 Months 1